So i have a few large projects going and they seem to be accumulating a large amount of "metadata cache" files--6gb in total. As i am running a solid state drive as my boot drive, this is relatively a large portion of my drive. I would like to clear these files but after searching around google and this forum, i am unsure as to what it will do...

Premiere creates "Media cache" files. In most cases you can delete them if they become to numerous. There location is stated in your Preferences menu under Media i think. Go into the folder when you find it and delete them. They will regenerate as you continue working with PrP.

I do routinely delete the "Media Cache" and have never had a problem. Those seems to be the render files (in fcp world) that help with playback. I have found that by redirecting those files to my work drive, i dont have to worry about them clogging my boot drive.

The problem i am having is for the "Metadata Cache" files located at: Library/Application Support/Adobe/Premiere Pro/5.0/Metadata Caches

This folder is now about 8GB and keeps increasing. In the meantime, i have been unable to find the option to store those files somewhere else within the Preferences panel and thus, would like to know what happens if i delete them. If its like the "media cache" folder, it will just regenerate the files it needs for whatever project i'm using, but then again, i'm afraid it might make the whole project explode...